Page 36 - JSOM Winter 2019

TABLE 13 CAT6 Pressures TABLE 15 CAT6 Complications and Safety
Total Total
Score Score Pressures n = Citation Score Score Complications and Safety n = Citation
322.91mmHg mean combined Unexposed CAT6 had 100%
5 pressures of all studies. 92 Combined effectiveness (50 of 50 tests),
205mmHg in mean tourniquet 3 whereas exposed devices had 82% 50 20
4 10 18 effectiveness (41 of 50 tests; p = .003).
pressure.
4 202mmHg mean pressure. 10 22 Wet tourniquets neither prolonged
5 application nor did they increase 46 25
Strap occlusion pressures of failure rates.
318mmHg (median), 260mmHg
4 12 34 Heat exposure was not associated
(minimum) – 536mmHg
(maximum). 5 with tourniquet damage, inability to 30 23
gain hemorrhage control, or inability
Calf application – pressures at to stop the distal pulse.
4.29 4 occlusion, completion, and 120 15 14
seconds after completion 382 ± CAT6 was the only tourniquet to
100, 510 ± 108, 424 ± 92mmHg. experience a mechanical failure. The
failure occurred when the windlass
Forearm application – pressures 3 was tightened before adequate 40 27
at occlusion, completion, and 120
4 15 14 3.25 tension was applied to the main
seconds after completion 301 ± strap.
100, 352 ± 112, 310 ± 98mmHg. Occlusion pressure decrease over
Occlusion completion pressure 1 minute after occlusion of 44 ±
mean 360mmHg (147– 1 33mmHg with 17 of 61 applications 61 35
5 745mmHg). Three CAT thigh and 61 35 requiring adjustment.
9 CAT arm completion pressures
were >500mmHg. 1 of 15 calf applications and 0 of 15
forearm applications lost occlusion
4 30 14
after 120 seconds from initial
TABLE 14 CAT6 Specifications occlusion.
Total 12% of tourniquets worn on plate
Score Score Specifications Scoring 2 carrier and exposed to Afghanistan 400 29
Width – ≥1.5 inches (critical 1.5 1 – Yes / elements broke on testing.
1
requirement). inches –1 – No 14/166 exposed versus 0/166
Length – ≥37.50 inches or 3 Unexposed broke and had decreased 166 33
1 provide 35 inches circumferential 37.5 1 – Yes / efficacy.
(critical requirement). inches –1 – No
5 1 – Yes / TABLE 16 CAT6 Usage
1 Locking Mechanism/Method. Yes
0 – No Total
1 – Yes / Score Score Usage Citation
1 Time Recording. Yes
0 – No 70% efficacy reported in 104 combat
Weight – <8 ounces 1 – Yes / 4 prehospital applications. 36
1 2.7 oz
(critical for JFAK inclusion). –1 – No 4 152 documented uses in combat. 10
4 71 documented uses in combat. 37
3.40
98% effectiveness (n = 61) reported in
5 civilian multi-institutional study between 38
2009 and 2014.
0 No user preferences recorded.
TABLE 17 CAT6 Logistics
Total
Score Score Logistics
5 NSN in DoD System. Same as CAT7
N/A 3 GSA Cost per Unit. No longer sold as CAT6
3 Commercial Cost per No longer sold as CAT6
Unit.

34 | JSOM Volume 19, Edition 4 / Winter 2019